Authors(s) and Affiliation(s)

Abstract

From an examination of seismic conditions and the located site of origin for the tsunami of 1969 probable borders of the tsunamigenic zone in the western Bering Sea were determined. A chart of covering the coast by tsunamis was compiled with allowance for refraction. The travel times and the coefficients of refraction were calculated and mapped for 33 points along the Kamtchatka coast. In addition, tsunami heights were calculated for these points. It was found that the probability of decreasing the height of tsunamis in the western Bering Sea because of refraction is 0.88, i. e. three times as many as the corresponding probability for the Pacific coast of the Kuril Islands and the Kamtchatka Peninsula. - (L'Ed.)